1969 Chevrolet Bel Air Ring and Pinion Set GM 8.2 in. - Rear - Ring and Pinion Set - 3.73 Ratio - 25 Spline Pinion - Rear guaranteed to replace your current 1969 Chevrolet Bel Air Ring and Pinion Set GM 8.2 in. - Rear - Ring and Pinion Set - 3.73 Ratio - 25 Spline Pinion - Rear. 1969 Chevrolet Bel Air Ring and Pinion Set comes new OEM 1969 Chevrolet Bel Air Ring and Pinion Set aftermarket new 1969 Chevrolet Bel Air Ring and Pinion Set of remanufactured 1969 Chevrolet Bel Air Ring and Pinion Set GM 8.2 in. - Rear - Ring and Pinion Set - 3.73 Ratio - 25 Spline Pinion - Rear.